Oil-press mat



(No Model.)

G.. s. ANDRES.

OIL PRESS MAT.

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NA PUERS, Pholnliwgqphnr. Washington. ELIC Fig. 2 is an edge View.

IUNITED STATES PATENT OEEICEO GEORGE S. ANDRES, OF SAN FRANCISCO,CALIFORNIA.

oiLmru-.SSv MAT.

SPECIFICATION forming part of Letters Patent No. 367,127, dated July 26,1887.

' Application filed May 11, 1887. Serial No. 237,902. (No model 'lowingto be a full, clear, and exact description of the same. I

Myinvention relates to an improved mat for oil presses; and it consistsof a coarse duck or fibrouswoven material having strips of sheet `metalriveted parallel with and at short intervals from each other upon bothsides, as will be more fully described. Reference is made to theaccompanying drawings, in which- Figure lis a view of a section of themat. Fig. 3 shows the mat and plate.

In the pressure of oil-cake, the meal is first placed in the 'bag orwrapper of cloth, and this is placed between mats, which may be eithermade of metal or porous ieXible or fibrous material. These mats are inmany cases made of hair; but the objection is that the great pressurecauses them to stretch in the direction of their Width, and this tearsthe bags, so thatthey are rendered useless after a few operations.

In my invention the base of the mat consists of heavy cotton duck orsimilar fibrous material A, which is closely woven, but is sufficientlyporous to allow the escape of the oil through its interstices. Upon eachside of this mat I rivet strips of sheet metal B, so that they lieparallel with each other and ata short distance apart from one side ofthe'mat to the other.. The lines of rivets which pass through thepairsof metal strips upon opposite sides are preferably from two inchesapart upward; but I do not wish to limit myself to any special distancebetween the rivets.

By this construction the mat is prevented from stretching in thedirection of the length of the strips, which is the direction in whichstretching would produce bad results upon the bag, and by reason of thespaces-between the strips the mat is sufficiently iiexible, so that itmay be folded in the usual manner when the bag and contained meal areplaced` between the folded partspreparatory to pressing.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The oil-press niat4 composed o f cotton duck or woven fibrous material,in combination with metallic strips riveted together from oppositesides, extending from end to end and parallel with each other,substantially as described. i

In witness whereof I have hereunto set my hand.

I eEo. s. ANDRES.

